Feeder apparatus and method for feeding material to a high pressure roller crusher
A technology of feeder and crushing machine, applied in the field of feeder equipment, can solve problems such as difficulty in establishing a self-generated protective layer, increased wear of rollers, and inability of materials to adhere properly
Active Publication Date: 2017-06-27
METSO OUTOTEC USA INC
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AI Technical Summary
Problems solved by technology
[0004] A common problem associated with high pressure grinding rolls is that it is difficult to quickly and firmly build up an autogenous protective layer
Material of proper composition must be fed into the gaps of the high pressure grinding rolls, otherwise the material will not adhere properly to the outer surface of the rolls, thereby increasing the wear on the actual surface of the rolls
Method used
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Embodiment Construction
[0023] figure 1 A conventional roll crusher 1 is shown without feeding means. The roller crusher 1 has two crushing rollers 2 which are parallel to each other and rotate in opposite directions towards each other. The crushing rollers 2 each have a shaft 3 with ends 4 mounted in respective roller bearings 5 . The roller crusher has a supply device 6 for feeding material to be comminuted to the comminution area of the roller crusher 1 . After the material has been comminuted in the comminution zone, it is transported away from the roller crusher 1 .
[0024] exist figure 2 In , a roller crusher 6 is shown having a feeder arrangement 7 according to an embodiment of the invention. The feeder arrangement 7 is adapted to feed material to be crushed or ground to the roller crusher 6 . The roll crusher 6 has two generally parallel rolls 8; the rolls 8 are arranged to rotate in opposite directions towards each other and are separated by a gap. The feeder arrangement 7 compri...
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The invention relates to a feeder device (7) for feeding material to be crushed or ground to a roller crusher (6) having two substantially parallel rollers (8); The two rollers are arranged to rotate towards each other in opposite directions and are separated by a gap. The feeder arrangement (7) comprises a main feeder (9) for feeding a first portion of material into the nip of the roller crusher (6). The feeder arrangement (7) is characterized in that the feeder arrangement (7) further comprises: an auxiliary feeder (10) for feeding the second portion of material to the roller crusher (6). The auxiliary feeder (10) is arranged to feed the second portion of material to the at least one roller (8) at an adjustable speed relative to the surface speed of the at least one roller (8). The invention also relates to a method for feeding material to be comminuted or ground to a roller crusher.
Description
technical field [0001] The invention relates to a feeder arrangement for feeding material to be crushed or ground to a roller crusher. The invention also relates to a method for feeding material to be crushed or ground to a roller crusher. Background technique [0002] When crushing or grinding rock, ore, cement clinker, and other hard materials, a roll crusher is used, which has two generally parallel rolls facing each other in opposite directions rotated and separated by gaps. The material to be comminuted is fed or choke-fed into this gap by means of gravity. One type of roller crusher is known as a high pressure grinding roller or high pressure roller crusher. This type of roller crusher uses a crushing technique called interparticle crushing. Among them, the material to be crushed or ground is crushed not only by the crushing surface of the roller, but also by the particles in the material to be crushed, so it is called "inter-particle crushing". [0003] Patent do...
Claims
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IPC IPC(8): B02C4/28B02C23/02
CPCB02C4/286B02C23/02
Inventor 拉斯·格伦瓦尔
Owner METSO OUTOTEC USA INC